William Kelly
William, Willie, Will or Bill Kelly may refer to:
Arts and entertainment
- Bill Kelly (writer), American screenwriter
- William Kelly (artist), American artist
- Roosevelt Sykes, American blues musician, stage name "Willie Kelly"
Politics
- William Kelly (Alabama politician), Alabama politician and U.S. senator
- William Kelly (New York state senator), New York politician
- William W. J. Kelly, Lieutenant Governor of Florida
- William Moore Kelly, businessman and politician in New Brunswick
- William Kelly (New Zealand politician), New Zealand Member of Parliament
- William Kelly (Labour politician), British Labour politician
- William Kelly (New South Wales politician), Australian politician
- Willie Kelly (politician), Australian politician
- William Osmund Kelly, mayor of Flint, Michigan
- William McDonough Kelly, political strategist and retired Canadian Senator
- Bill Kelly (politician), politician in Lapeer, Michigan
Sports
American football
- Bill Kelly (quarterback), American football player at the University of Montana and in the NFL
- Bill Kelly (American football, born 1947), American football player and coach
- Kenneth Kelly, nicknamed "Bill", American football player and coach, head coach at Central Michigan University, 1951–1966
Australian rules football
- Bill Kelly (footballer, born 1882), Australian rules footballer for Fitzroy
- Bill Kelly (footballer, born 1930), Australian rules footballer for Footscray
- Will Kelly (Australian footballer), Australian rules footballer for Collingwood
Baseball
- Bill Kelly (outfielder), 19th-century American baseball player
- Bill Kelly (first baseman), American baseball player
- William Kelly (baseball), Negro league baseball player
Other sports
- Bill Kelly (rugby league), New Zealand rugby league footballer and coach
- Will Kelly (rugby union), Canadian rugby union player
- William Kelly (Victoria cricketer), Australian cricketer
- William Harvey Kelly, Australian cricketer
- William Kelly (1910s footballer), English footballer for Newcastle United and Manchester City, see List of Manchester City F.C. players (1–24 appearances)
- William Kelly (footballer, born 1937), English footballer known as 'Brian'
- Willie Kelly (footballer), Scottish footballer for Airdrieonians and Blackburn Rovers
Others
- William Kelly (biblical scholar), classicist and Biblical expositor
- William Kelly (inventor), American inventor of a steel smelting process
- William Russell Kelly, founder of the American temporary staffing agency, Kelly Services